So I've made a few modifications to the design, including;
The head has been moved forward slightly (Compare this with the bottom right image) the travis bricks in the legs are now flush with the 1X4s made some Wings, both extended and folded varieties (Rainbow colored for visibility) NOW MADE IN 100% PURE ABS PLASTIC
I've also been working on some designs for the other ponies, but that's all so far.
* pinkie pie teleporting * Applejack with a leaf mustache * Dragonshy reference * "I'm not giving him cake, I'm assaulting him with cake!" * CANON SHIPPING
The legs probably should be a little longer, but lego doesn't make 1x5 plates, and I'm not sure about the eyes, they look a little better IRL, but I'm not sure.